Friction-clutch.



PAT-ENTEID MAX 233, 1908.

, s. BRAMLEY-MOORB.

FRICTION CLUTCH.

APPLICATION PILED FEB. 28, 1907.

3 SHEETS-SHEET 1.

INVENTOR. Affi'mzgyflrare.

wg lfqesesz W w No. 888,523 PATENTBD MAY 26, 1908.

S. BRAMLEY-MOOR-E.

FRICTION- CLUTCH. APPLIOATIOH FILED 217123, 1901.

a sums-SHEET g.

' PIC-.2,

iATENTBD MAY 26, 1908.

s. BRAMLEY-MOORE.

FRICTION CLUTCH.

APPLICATION FILED FEB. 23, 1907.

3 SHEETS-SHEET 3.

WLTNESUSES:

"entrain srans rrnnr Enron,

SWINFEN BRAMLEY-MOORE, F LONDON, ENGLAND.

FRICTION-(SLUT CH.

I which the following is a s ecification.

' This invention relates to 'riction clutches, the two members of which each have a single frictional surface, more particularly those employed in motor road vehicles to couple the motor to thetransmission gear, and it consists essentially in the employment with the spring or springs usually employed to keep the two parts of the clutch in engagement, of one or more auxiliary springs which oerate with the main spring or springs clutch, the arrangement being such that when the mechanism for withdrawing the movable part of the clutch out of engagement with the other part thereof is operated its first movement increases the pressure of one spring or set of springs and decreases that of tr e other and its final movement withdraws the movable part of the clutch out of engagement with the other part thereof, the object being to obtain a gradual engagement of the two parts of the clutch so as to pick up the load without shock and to positively break the connection of the clutch when the frictional contact of the parts is insufficient to transmit any power so as to stop the rotation of the movable part of the clutch which is essential to effecting a change of the ratio of gearing when a velocity ratio gear is emplo ed. i n the accom anying drawings which showbyway of ill ustration some methods of applying this invention to clutches emloye in motor road vehicles :Figure 1, bheet No.1, is a view in sectional elevation showing one form the invention may assume when applied to an ordinary cone clutch, the two parts of the clutch being shown in driving engagement; Fig. 2, Sheet No. 2, is a view in ptional elevation showing the same conv.truction with one of the springs compressed so that its influence is removed from the clutch, the movable part of the clutch being kept in engagement with the other part by the other spring which has been allowed to expand and so reduce the pressure it exerts; Fig. 8, Sheet No. 2, is a broken view in sectional-elevation showing a modification of Specificatioxrof Letters Patent.

Application filed February 23, 1907. Serial No. 358,900.

t rough an intermediate pieceto get the Patented. May so, 1908.

one of the elements; Fig. .4, Sheet No. 1, is a broken view in elevation artly in sectionsho.wing another modification of one of the elements; Fig. 5, Sheet No. 3,is a view in sectional elevation of a modification of the construction shown by Figs. 1 8t 2.

Throughout the views similar parts are 'marked with like letters of reference.

' Referring to Figs. 1 8c 2, which. show the application of the invention to an ordinary cone clutch in which one part 0 thereof is fixed on the driving axle y and the other 00 thereof is mounted to slide on the driven axle a), the two springs 12 and b are arranged to act on the movable part a of the clutch through an intermediate piece 0 carried by a sleeve a mounted to slide on asleeve it formed on or fixed to the said movable part a of the clutch, the intermediate piece having an external flange c at one end and an internal flange at the other end. The spring 5 is located between the flange c of the intermediate piece 0 andan adjustable sleeve it" carried by an extension piece a fixed to the art a of the clutch, and the spring I) is coated between the flange dot the intermediate piece 6 and the boss of the movable part a of the clutch. These springs are of equal strength so that they act together as shown in Fig.1 to keep the two parts a & a of the clutch engaged. The movement to operate the clutch is transmitted from the controlling foot lever to the sleeve c in the ordinary way, or any other convenient manner, the said sleeve 0 being shown in the drawin as fitted with a grooved collar z with w ich the usual forked lever en ages. On the end of the sleeve (1 is fixed a collar (1 with which the end of the sleeve c carrying the intermediate piece 1: contacts after the pressure of the springs I) and l) is removed.

om-the movable part a of the clutch, and

thus operates to mechanically withdraw the on the driven axle.

The action of the clutch is as follows 1 -When the sleeve a carrying the intermediate piece 0 is moved in the direction of the arrow shown in Figs} and 2,455 clutch.

gradually reducing the pressure "oi jsaida gp tling on the movable part afof the en the spring I) has expanded to such extent that it no longer exerts sufiicient'pmsw sure to enable through the clutc the parts-maybe posiby ausower to be .transmlttedtivelyl withdrawn from the part a ing' t e end of the sleeve c ,'orthe-cfollar thereon to contact. the collar- 12 on the 15 sleeve and thus withdraw the movable part of the clutch. In rengzgging the'clutch the returmmovement of the iding sleeve 0 the intermediate-piece 0 allows the spr' to gradually increase in strength and t us gradually pickup the load,until the pressure of the two SPIlDgS becomes .balanced when they operate together to keep the two parts of the clutch in engagement.

In the construction illustrated by Figs. 1 and2 it is necessary, owing to the spring 6 operat' th'rough t e spring I), to give the mterm fi and as this is not always convement the two springs may be arranged to act or operate independently as shown in Fi .5, in which construction the inner end 0 'the sleeve 0 contacts the boss of the movable part a of the clutch, when the spring I) is operating to keep the two arts of the clutch 1n engage- 85 ment. This ows of the a rin b being made lighter than the spring and therefore reduces the amount of travel to be given to the sleeves to permit of the full expansion of the said spring I). To enable the pressure loexerted b'y-the springs 12 and b to be varied the intermediate piece 0 may be made in two pieces screwed or otherwise cou led together to. provide for longitudina adjustment ;oi the two flanges 0 c as shown by Fig. 4.

1nth'e construction shown by. Fig. -6 the two springe b. and]; encircle an extension of '1 the the sliding sleeve-c is mounts ed freelyfon said iextension. The sleeve 0 v carries. c'which pass through slots d in. a sleeve 12 formed onor. fixed to the movablepart a of the clutch and to which the shaft to be driveniseou led, the said arms 0' carrymg a grooved (:0 ar z through which the clutch is operated. To positively with- 55 draw the movable art a of the clutch from the other part it t e "arms 0 carried by the sleeves engage the ends of the slots d in the sleeve (1. I

What I claim as an invention, and desire secure by Letters atent isz- 1. The combination-in a friction clutch of the single cone type,- of apart fixed to the shaft, a movable part carried by a sleeve mountedto slide on the driven shaft,

t5 an intermediate pieoe'located-hetween the ate sleeve 0 a considerable travel,

. s am fbwqflg bi the clutch, .a spring operating twesn theisard intermediate piece and the m yahle partgiof the oh tch, a second spring hetweenlg the said intermediate i tl part clutch carried by e'd iy efl e-a t pw ri y the m able of-the clutehgia sleeve carrying the intermediatetr piece, Ia; grooved collar carried by the said slidingsleeve, as set forth.

' -2.f--;'lhecombina i0 in afric'tion clutch of .the single cone type, of a part fixed on the driving'shaft, apart mounted to slide on the drive'nnhaft, a sleeveforming part of said movable part of the clutch an intermediate piececarried by a sleeve adapted to slide in 30 relation to the movable part of the clutch, a

s ring operating between. the said intermeate piece and an abutment fixed in longi tu'dina relation to the part of the clutch on the driving shaft so as to keep the said intermediate piecejncontact withthe disengaging ,partbf-thd eintch, a second spring operatmg between thesaid sliding piece and the disengaging art ofthe clutch, and a sto or collar carrie by the movable part of the clutch with which the end of the sleeve carg-the intermediate piece .contacts, as set ry fort.

3. The comb' tion in a friction clutch of the cone type, of a part fixed on the driving shaft, a plart mounted to slide on the driven shaft, a s eeve forming part of the said mov able part of the clutch, an intermediate piece carried bya sleeve adapted to slide on..the movable part of the clutch, a grooved collar in relation to said sliding iece, a spring'opcrating between the said s iding piece and an abutment fixed in longitudinal relation to the part of the clutch on the driving shaft so as to kee the said sliding piece in contact with the engaging part of the clutch, a econd spring operating etween the said slid jng piece and the disengagin part of the clutch, I a stop or collar on the on of the sleeve of the movable part of the clutch with whichthe end of the sleeve car the intermediate piece contacts, and '0 means for operating} the intermediate piece, as set forth x. 4. The combination in a friction of the single cone type, of'a. part fixeaio the, driving shaft, a movable partearried..by-a;"- sleeve mounted to slide on thedriven shaft,-

an intermediate piece sliding in relationl o the movable part of the clutch, a spring op crating between the intermediate .pieceand 1210. the movable part of the clutch, a second;- spring operating between the intermediate, plece an the art of the clutch, carried by the driving sha t, a stop carried by the mov-.-'"-:.- able-part of the clutch, a flange carriedby the sliding intermediate iece, and a grooved collar carried by the siding piece, as set forth.

5. The combination the single cone type, 9

" a friction clutch of a part fixed on the 130 intermediate piece and an abutment fixed engaging part of the clutch, a second spring driving shaft, a part-mounted to slide on the driven shaft, a sleeve forming part of the said disengaging part of the, clutch, an intermediate piece carried by a sleeve adapted to slide in relation to the movable part of the clutch a spring operating between the said in longitudinal relation to the part of the clutch on the driving shaft so as to keep said intermediate piece in contact with the disoperating between the said intermediate piece and the disengaging part of the clutch, and a stop carried by the disengaging art of the clutch with which a flange carried y the gliding intermediate piece contacts, as set ort 1. '6. The combination in a friction clutch of i the cone type, of a part fiXBd "on the driving shaft, a disengaging part lnodnted to slide on the driven shaft, a sleeve forming part of the said disengaging part of the clutch, an I intermediate piece carried by a sleeve adapt ed to-slide in relation to the movable part of the clutch, a grooved collar on said slidin piece, a spring operating between the said sliding piece and an abutment fixed in longitudinal relation to the part of the clutch on the driving shaft so as to keep the said slid- SW INFEN BRAhlLEY-BQOORE.

Witnesses:

ROBERT E. PHILLIPs, G. V. SYMES. 

